Check the listing for details. RAM-B-201U RAM Double Socket Arm - B Size Medium.... Color: Black, Condition: New. Listed at 29.44 USD. RAM Double Socket Arm - B Size Medium... RAM-B-201U Genuine RAM Products! The RAM-B-201U consists of a medium double socket arm that accommodates 1 INCHES B size ball bases, device holders, and adapters. With an overall length 3.73 INCHES , this is the standard RAM double socket arm size. The easy to adjust knob allows for near-infinite adjustability for your connected device.product dimensions Overall Length: 3.73 INCHES socket to socket length 3 INCHES ball size B Size (1 INCHES )weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lbmaterials Marine-grade aluminumpackaging type Poly BagWeight 0.31 lb FEATURES Standard RAM double socket arm provides an ideal overall length of 3.73 INCHES and a socket-to-socket length of 3 INCHES Attaches to any B size RAM ball component, including mounting bases and device holders; double ball and socket technology allows for near-infinite adjustability of your RAM mounting system Made of powder-coated, marine-grade aluminum for durability and reliability in the most demanding environments Backed by a lifetime warranty product dimensions Overall Length: 3.73 INCHES socket to socket length 3 INCHES ball size B Size (1 INCHES ) weight capacity Standard Use: 2 lbsHeavy-Duty Use: 1 lb materials Marine-grade aluminum packaging type Poly Bag Weight 0.31 lb